Aaron f u l l e e



,tiititrd $131135 AARON FULLER., o

Letters Patent No. 97,382

.r MARIETTA, onto'.`

, (lated Norember 30, 1869.

IMPRovEMENT 1N PUMPS.-

The Schedule referred to in these Letters Patent and making part of the same To all whom t mtl/y concern: l

Bc it known that I, AARON FULLER, ot' Marietta, inthe county of Washington, and State of Ohio, have invented a new and useful Improvement -in Pumps; and I do hereby declare that `,the following is a full and exact description of the same, reference being had to the accompanying drawings, and to the letters ot' reference marked thereon.

This invention-relates to that class of pumps `in which a cylindxicalpiston is employed in connection with an internal cylinder'; andconsists, first, in constructing the piston of larger size than the cylinder, and connecting the two by means ot' a ring-valve, by which alrangement a small friction-surface is obtained; and second, in the employment 'of a sleeve, in connection with the piston-rod, by means of which the piston is caused to move with.a"r'egular and steady stroke.

In the drawings- Figure l is a side elevation,

Figure 2, a sectional elevation, and

Fig-ure 3, a perspective view of valve-holder B.

To enable others skilled in the art to make and use my invention, 'I will now proceed to describe fully its construction and method of operation.

A represents the` outer casing or cylinder of the pump, which is provided `at the bottoni with a suit-.

able angefor seedling the same, and at the top with a smiling-box, through which passes the piston-roda,

the latterbeing operated by a handle, af`ter the usual manner. y

To the top of the pump is also attached a sleeve, which encircles the pist-ended, `and prevents the latter, from wabbling infthe stu'ng-box.

The lower end of the rod a is s crewedinto the l valve-holder B, which consists of the screw-socket B,

which is connected, by the arms B2, to the annular rim b.

This latter is provided with a flange, b', thus forming a receptacle for the valve O, which opens upward.

The rim b is provided with a thread, by means of which it is secured to the upper end of the cylindrical piston c, which, when in place, bears against the edges of the v'alve G2, and holds the same in place.

The lower end of the piston c is .provided with the I annular packing c, which fits closely around the barrel D.

-tl represents a circular plate, provided on its upper side with a leather or rubber pad, di, on which rest the cylinder A and the barrel D, and on the underside with an annular screw-socket, d, to which is attached the tubing throngh'which the water is drawn. l

In the centre of the plate d is a circular oritice couuecting with the annular-socket d", which is covered by the valve E, the same heilig partially cut out from the pad d, and has a metal weight riveted thereto.

The operation of my invention will be readily un'- derst-ood.

Whenthe piston c is raised, a 'vacuum isformed in the barrel D, which causes the water below to open the valve E, and rush up and till the barrel and piston up to the valve O2.

The piston being then depressed, causes the water to close the valve E, open the valve O2, and rush out between the arms b2, and through the spout of the Pump The advantages of my invention arethe outer cylinder A is not, of necessity, bored.l

Second, it will hold water longer, as it cannot leali out below the upper end of the barrel D, it' both va` ves should be leaky, and as long as the piston is tight, the pump'cannot lose all its water.

` Third, the working piston, operating as it does on the outer surface of the small cylinder, and surrounded with water, will operate withless packing than when it works on the inner surface, and in some cases without any packing.

It will be observed, that the bearing-surface hetween the piston and cylinder is very small, it being limited to the ring\alve only, and consequently the sleeve a' is provided about the piston-rod, by means of which the .latter is prevented from wabbling. I do ngt claim any ofthe particular devices shown; but having thus fully described my invention, l

. What I claim Fis new, anddesire to secure by Letters Patent, is, l

The piston c, constructed as described, and provided with the ring-packing c', when used in connection with the cylinder D, and combined with the rod (t, Working in 'the sleeve a', as described, 'for 'the purpose set forth.

This specicatiou signed and witnessed, this 15th day of May, 1869. V

AARON FULLER. \Vitnesses:

,STEPHEN NEWTON,

A. F. WARD.

First, the pump4 can be made at less expense, as i 

